mcdonald



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J. w. McDevALD,` or' oseoon, INDIANA.

4Letters .Patent No. 72,660, dated December 24, 1867.

IMPROVEMENT IN PRINTING-PRESSES.

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Be it known that I, J. W. MCDONALD, of Osgood, in thc co unty of Ripley, and in the State of'- Indiana, have invented a new and useful Improvement in Printing-Presses; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawings making part of this specification, in which- Figure 1 is a plan or top view of my improved press.

Figure 2, a vertical section thereof.

Figure 3, a front elevation, showing the platen lifted.

Figurefl, a partial elevation of one side, showing thelinking-rollcr on the types, and' l Figure 5 is a section on the line :v a: of figs. 1 and 3.

The nature of my invention consists in a hand-power printing-press, of extremely simple construction, so combined with a cabinet or case of drawers, that may contain type, rules, leads, and all the appurtenances of such'a press, that the whole may form a neat, compact, and ornamental piece of furniture for the wareroom or counting-house, and be expressly adapted to the wants of the mercantile and manufacturing community in print'- ng cards, circulars,l &c., asthey may be required, without the delays attendant upon sending to and from a. regular printing-office, and atmuch less expense.

A is the cabinet, containing drawers B, for the reception of the cases of type and other articles required in card-printing. C is a'bedplate of metal, screwed or otherwise rigidly secured to the top of the cabinet, which may itself be secured to the floor, so as not to be disturbed in its positionby'the working of the press. On the plate C is placed the chase D, in which the form is set and xed, and 'which is held from slipping or sliding on the plate C by pins-projecting up from the plate, or any other suitable device. E is the ink-roller, constructed of wood, or whatever may be found suitable, and placed in an ink-reservoir at the back of .the plate C, in which it may be made to revolve by a crank, a, on one end of its shaft (see figs. 1 and One or both of the bearings` of the roller E may becovered by a cap in the ordinary manner, so as to allow the roller to be removed from its bearings when necessary. F is the platen, ofcast metal, strengthened on the top by ribs bt,

in a manner commonly known, and having an arm or rod, G, projecting from its front edge, which may be in one piece with the platen, as shown, or be firmly attached to it. On the frontend-rear edges of the platen are screwed clamping-strips, c c', which hold between themselves and the edges of the platen the facing d of cloth, felt, or other suitable material, which is stretched across the lower or inner face of the platen. The clamp c also holds the bent ends of the two thin elastic .strps`of metal, e e, which extend from the rear nearly to the front edge of the platen, and are kept by their elasticity close to the facing al of the platen. The card or paper to be printed is placed in between the cloth or felt facing d, and the elastic strips e e, which thus serve the purpose of and act the same as the frisket" of au ordinary hand-press, while they may be regulated in their distance apart to suit cards of different sizes. H is a strong bar, having a trunnion, f, at each end, confined by aud revolving in a strap, g, which is fastenedsto the back of the cabinet at each end, and may terminate in u foot, g', by which the whole apparatus .may bc secured to the Hoor. The bar H has projecting from its centre an arm, I, which passes through a hole in the platen F, fittingl it accurately, and is secured by an adjustingscrew and nut, I. Two regulating-screws, K, K, are tapped through the platen, one on each side of the arm and screw I I', and. abut with their ends against the face ofthe bar' H. It will be seen that the platen may be' raised or depressed on the arm -I by the action of the screws I and K, and be regulated to suit 'the height of the types above the bed-plate C, the trunnionsf being the centres on which the platen vibrates." L L are two slides, resting on the top of the platen, andat each end thereof, and they may each be fitted to run in a groove, h, on each end of the platen, as shown in the section, g.'5. The slides L L are connected at their front ends to a strong, inflexible bar, M, which is attached at its centre to a sleeve, NN, which is fitted to and slides freely ou the arm G of the platen. y A pin, z', which projects from the arm G through a slot,'z", in the sleeve N, (ses gs. 2 and 3,)- prevents the sleeve from being drawn entirely clear of the arm G. The slides L have also each a lug, 7c, near their rear ends, in which are supported the bearings of the inking-roller O. This rclleris made j of the materialscomm-only usedfor such purposes, and is so set in its relation te the rest of the machinery that when the platen is resting on the foru1,the roller 0 may be in contact with the roller E, as shownin lig. 2, from which it becomes 'charged with ink by turning the crank a. Extending across the facing d, from one lug lc to the other, to which they are secured at e'ach end, are two parallel thin metallic strips, Z Z, placed so near together as just to permit the frisket-strips ene to pass between them, one of the strips, Z, being close to the'facing d,

between it and the friskets e e, and the other being outside of the friskets e c, and between them and the roller O, and tending to lieep the frislicts pressed towards the, facing cl. The strip lwhich is next to (the facing d, serves as a stop to prevent the card to be printed from being placed too far bach on the facing, and, when necessary, discharges the card after being printed, as will be hereafter described.

rIlhe manner of operating my improved press is as follow-avvia: The form, being set and fixed in the chase, the platen set to the proper position by the screws I K, and ink distributed over the type, the platen is lifted to the position shown in iig. 3'. A card is now placed between the friskets e e and the facing, as shownby the broken and dotted lines in figs. 2, 3, 4, and 5, and`the platen is lowered and the impression taken. The crank p a is turned, charging the rollerV O with ink, and the platen is lifted high' enough to let the roller O bedrawn up on the types by pulling forward the sleeve N, which movement is continued until the roller has traversed the width of the form, and the strip Z has pushed'out the printed card, which falls into a receptacle in front of the machine. The sleeve N is now-pushed back, moving the slides L and the rol-ler O back over the types, when the platen is lifted again to the position of g.3 to receive a new card, and the operation of pressing, charging the roller O, inking the type, and discharging the cardafter printing, and returning the roller O, is repeated;

Having thus fully described my invention, what 'I claim as new therein, and desire to secure by Letters Patent, is

The slides L L, the sleeve N N', and strips Z l, with the inking-roller O, combined and operating substantially as set forth with the platen I".

In testimony that I claim the above-described improvements in printing-presses, I have hereunto signed my name, this 24th dey of May, 1867.

J. W. MGDONALD.

Witnesses: y

ALFRED E. Momma, Gro. W. FoaMnnn. 

